// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/snapshot/snapshot-source-sink.h"

#include "src/base/logging.h"
#include "src/handles-inl.h"
#include "src/objects-inl.h"

namespace v8 {
namespace internal {

    void SnapshotByteSink::PutInt(uintptr_t integer, const char* description)
    {
        DCHECK_LT(integer, 1 << 30);
        integer <<= 2;
        int bytes = 1;
        if (integer > 0xFF)
            bytes = 2;
        if (integer > 0xFFFF)
            bytes = 3;
        if (integer > 0xFFFFFF)
            bytes = 4;
        integer |= (bytes - 1);
        Put(static_cast<int>(integer & 0xFF), "IntPart1");
        if (bytes > 1)
            Put(static_cast<int>((integer >> 8) & 0xFF), "IntPart2");
        if (bytes > 2)
            Put(static_cast<int>((integer >> 16) & 0xFF), "IntPart3");
        if (bytes > 3)
            Put(static_cast<int>((integer >> 24) & 0xFF), "IntPart4");
    }

    void SnapshotByteSink::PutRaw(const byte* data, int number_of_bytes,
        const char* description)
    {
        data_.insert(data_.end(), data, data + number_of_bytes);
    }

    void SnapshotByteSink::Append(const SnapshotByteSink& other)
    {
        data_.insert(data_.end(), other.data_.begin(), other.data_.end());
    }

    int SnapshotByteSource::GetBlob(const byte** data)
    {
        int size = GetInt();
        CHECK(position_ + size <= length_);
        *data = &data_[position_];
        Advance(size);
        return size;
    }
} // namespace internal
} // namespace v8
